<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>houdunren.com</title>
  </head>
  <body></body>
  <script>
    // let hd = "houdunren";
    // console.log(/aaau|@/.test(hd));
    let tel = "020-9999999";
    console.log(/(010|020)\-\d{7,8}/.test(tel));
  </script>
</html>
